Circuit interrupter



May 14, 1929. R. GASPARIK CIRCUIT INTERRUPTER Filed April 26, 1927 Patented May 14, 1929.

UNITED STATES PATENT OFFICE.

RUDOLF GASPARIK, OF NEW YORK, N. Y.

CIRCUIT INTERRUPTER.

Application filed April 26,

This invention relates to improvements in automatic circuit interrupters, and it is the principal object ot my invention to provide a. socket for the reception ot a lamp or plug with an interruptor for making and breaking the circuit periodically at certain predetermined intervals.

Another object ot my invention is the provision ot.' an automatic circuit interruptor ot this type using thermally actuated means by the heat. generated by the flowingl current during the period of circuit conductivity and causing the separation oi contacts, whereafter upon the cooling of said means the separated contacts will again be engaged and thus complete the circuit. s A further object ot my invention is the pro Vvision of a circuit interruptor ot simple and inexpensive construction, yet durable and extremely eliicient in its operation.

A still further object of my invention is the provision of a` compact circuit maker and breaker in shape of a button adapted Jfor insertion into any or the conventional, customary sockets.

These and other objects and advantages of my invention will become more fully apparent as the description thereof proceeds, and willthenbe speciiically delined in the appended claims.

In the accompanying drawing, 'forming a material part of this disclosure:

F 1 shows partly in section, and partly broken away a conventional socket equipped with a circuit making and breakingdevice constructed according to my invention.

Fig. 2 is a top plan view ot a libre disc and a blockvoli insulating material, and cooperating parts.

Fig. 3 is a top plan view oil a `libre disc forming with the disc, Figure Q, a traine or housing tor the thermally actuated device.

Fig. l is a section on line 4 ot Figure 2.

Fig. 5 is a section on line --5 oit Figure A conventional, one-piece socket within a sleeve 11 01"' insulating material, has 'the customary reduced part 12 forming a shoulder against which rests a disc 13 ot librous material 0i a suitable size and shape. A rectangular block 14n or' insulzding` material is secured by means oi the rivet or eyelet 15- to the disc 18,v and a smaller disc 16 or brous material is secured to disc 13 by means of the screws 17.

A screw 18 is screwed into the center of dise 16 and the head of this screw rests in 1927. Serial No. 186,741.

the contact end of socket 10 making contact with the main circuit, and passes through the entire arrangement pressing the saine against the shoulder of the reduced part 12 ol the socket 10.

As illustrated in Figure 2, the block 14% has laterally secured thereto a ihermostatic element 1 9 by means ot a screw 20.

An angular metal piece 21 (Fig. l) is attached by means olf the screw 22 to the block lll and a silver rivet or contact piece is provided on Vthe metal piece 2l, while el designates an insulating body on the lamina 19 which also carries a silver rivet or contact piece 25 oppositely disposed to contact piece 23.

A coil 26 olf resistance wire is wound about body 2li, the insulated end or start of which is indicated at 27, and this coil is directly connected with the element 19, as indicated at 28.

he eyelet 15 passes through an opening Q9 in block 11, while a connection 30 connects this eyelet 15 with the metal piece 21, and the openings in the disc 16 which receive the screw 17 are designated 81.

As illustrated in Figure 1l, the metal elvelet S2 or the like is located in substantially the center of disc 1G and has an inner thread for the reception of screw 18, while a connect-ion attached to the beginning 27 of the coil 2G rests upon the eyelet 32 to forni a contact therewith.

The device operates as follows:

The current enters at the head ot screw 1S, passes through the eyelet 32 and a cennection 33 into coil 26 and enters at 28 the thermostatic element 19, passes the two silver Contact pieces 25 and 23 into the metal piece 21 and through connection 30 into eyelet 15. The current will heat the coil 26 and evidently also the element 19, so that the saine will bend and thus interrupt the Contact between 23 and 525 and thus open the circuit.

It will be clear that the thermostatic element will cool and unbend again and return into its original normal position in which contacts Q3 and 25 are again engaged so that the above described steps will be repeated.

lt is to be understood that I have described and shown as an example the preferred form of my device, but do not wish to be limited to the exact construction disclosed, and reserve my right to make such changes in the general arrangement and the construction ot the minor details of my device as come within the scope of the appended claims without departure from the gist and spirit of my invention.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent is:

1. In a thermostat circuit making and breaking device a pair of fiber discs, a. block secured to one of said discs, a thermostatic element secured to said block, an insulating body on said element, an angular metal piece secured to said block, a contact piece on said therinostatic element and a contact piece on said metal piece oppositely disposed to said contact piece on said therinostatic element, a coil on said insulating body in series with the mainv line, said thermostatic element adapted to be heated bythe current and to bend so as to interrupt the circuit by disengaging said contact pieces.

2. A circuit interrupter comprising a pair of fibre discs, means for connecting both discs, a block on one of said discs, an angular thermostatic element attached with one of its branches to lone side of said block, a contact on said element, the other branch of said element transversely disposed to said discs, an angular metal piece attached to the vopposite side of said block, a` contact piece on said metal piece oppositely disposed to the Contact piece on said thermostat-ic elenient, an eyelet in one of said discs, a screw in said eyelet in connection with the main circuit, said therinostatic element adapted to be heated and bend under the inuence of the. current to disengage said contact pieces to interrupt the circuit.

3. A circuit making and breaking device having the shape of a button and adapted to be inserted into a socket, comprising a pair of discs, means for connecting both discs spaced from each other, an insulating block on one of said discs oppositely disposed to the other of said discs, an angular thermostatic element secured at one Aof its branches to one side of the block, an insulating body on the other branch of said element, a coil on said body, transversely disposed to said discs, said coil connected to the thermostatic element and to the main line in series therewith, an angular metal piece secured to the opposite side of said block, a contact on the lower branch of said metal piece opposite to said element, a contact piece on said thermostatic element oppositely disposed to said contact on said metal piece, an eyelet having an inner thread adapted to receive the contact of the main line and to allow a heating oi said coil and thermostatic element and bending of Vthe saine to interrupt the engagement between said contacts and to engage the saine upon the cooling ofthe thermostatic element upon the interruption ot' the circuit.

4. The combination with a socket of a circuit interrupter adapted to be introduced into said socket, said interrupter comprisingrr a pair of superposed and spaced fibrous discs, an eyelet in the center ot' the upper disc, an eyelet having an inner thread inl the center ot' the lower disc, an insulating block on the lower of said discs, screws for connecting both discs, an angular thermostatic element secured with one of its branches to the side of said block, 'its other branch extending transversely to said discs an angular metal piece secured with one of its branches to the side of said block oppositely disposed to the fastening of said therinostatic element branch, a contact on its other branch, aA contact on the transverse branch of said thermostatic element oppositely disposed to the contact on said metal piece, a connection between said metal piece and the eyelet'of the upper disc, an insulatingbody on the transverse branch of said thermostatic element, a coil on said body connected to said thermostatic element and to the main circuit, a screw in contact with the main circuit adapted to be screwed into the eyelet of the lower disc, and for holding the parts together, said thermostat-ic element being heated by the current from said main circuit and bending to interrupt the engage- .ment between both contacts and to unbend 

